Code generate the python client using the publicly accessible OpenAPI spec

[brandonc]

https://app.terraform.io/openapi/prerelease.json

Use-cases

Avoid the delay in uptake and maintenance burden as new endpoints, operations, attributes, and relationships as they are added to the platform API.

Proposal

• Use any number of SDK generation tools to regularly code generate the API code published to HCP Terraform (link above). We use Microsoft Kiota for generating go-tfe/v2.
• Maintain just the wrapper, middleware, authentication, and other cross-cutting functionality, allowing the API to be extended automatically.